Studies of Surface Functional Modification of alpha-Al2O3 Nanoparticles Using Organic Chain Dicarboxylic Acid Containing Trimellitylimido-Amino Acid-Based Diacids Via Post Modification Method

摘要

With the rapid development of nanoscience and nanotechnology, wide use of metal oxide nanoparticles (NPs) has been reported. Thus, improving the dispersion stability of NPs in various liquids is essential for those applications. The authors describe the surface modification of aluminum oxide NPs using dicarboxylic acids (DCAs) containing natural amino acids such as L-phenylalanine, S-valine, L-methionine, L-leucine, and L-alanine through the ultrasonic method. The successful production of the modified alpha-Al2O3 NPs was verified by different techniques. The results of analyses proved that the DCAs as biomodifiers are grafted onto the surface of alpha-Al2O3 NPs.